Technical Information
| HTTP Status Code | 200 |
| HTTP Version | HTTP/1.1 |
| HTTPS | ✔ Available |
| IP Address | 151.101.131.4 |
| CDN | CDN (HIT) |
| Compression | gzip |
|
ℹ 🔵 Missing Content Security Policy | CSP is not configured. It helps prevent XSS attacks and content injection. |
|
ℹ 🔵 Missing X-Frame-Options | The site can be embedded in iframes by third parties (clickjacking risk). |
HTTP Status Code 200
HTTP Version HTTP/1.1
HTTPS ✔ Available
IP Address 151.101.131.4
CDN CDN (HIT)
Compression gzip
ℹ 🔵 Missing Content Security Policy CSP is not configured. It helps prevent XSS attacks and content injection.
ℹ 🔵 Missing X-Frame-Options The site can be embedded in iframes by third parties (clickjacking risk).
Redirect Chain
| # | URL | HTTP Status Code | Status |
| 1 | https://certainly.com:443 | 301 | HTTP/2 301 |
| 2 | https://www.certainly.com/ | 200 | HTTP/2 200 |
#1 URL https://certainly.com:443
HTTP Status Code 301
Status HTTP/2 301
#2 URL https://www.certainly.com/
HTTP Status Code 200
Status HTTP/2 200
Performance
| DNS Lookup | 13.5 ms |
| TCP Connect | 14.6 ms |
| TLS Handshake | 6.7 ms |
| Time To First Byte (TTFB) | 54.8 ms |
| Content Download | 0.2 ms |
| Total Response Time | 55.1 ms |
DNS Lookup 13.5 ms
TCP Connect 14.6 ms
TLS Handshake 6.7 ms
Time To First Byte (TTFB) 54.8 ms
Content Download 0.2 ms
Total Response Time 55.1 ms
Security
| HTTPS | ✔ Enabled |
| HSTS | ✔ max-age=31557600 |
| CSP | ⚠ Not configured |
| X-Frame-Options | ⚠ Not configured |
| X-Content-Type-Options | ⚠ Not configured |
| HTTP/2 | ⚠ HTTP/1.1 |
HTTPS ✔ Enabled
HSTS ✔ max-age=31557600
CSP ⚠ Not configured
X-Frame-Options ⚠ Not configured
X-Content-Type-Options ⚠ Not configured
HTTP/2 ⚠ HTTP/1.1
SEO Quick Check
| Title | Fastly’s certification authority - Certainly |
Title Fastly’s certification authority - Certainly
HTTP Headers
| Expires
| Mon, 17 Aug 2026 13:37:41 GMT |
| Cache-control
| public, max-age=3600 |
| Last-modified
| Tue, 12 Sep 2023 15:43:51 GMT |
| Etag
| "af9523ac133f68d6a8fa6c445b4a3aba" |
| Content-type
| text/html |
| Content-encoding
| gzip |
| Accept-ranges
| bytes |
| Age
| 2278 |
| Date
| Wed, 19 Aug 2026 22:00:40 GMT |
| Via
| 1.1 varnish |
| X-served-by
| cache-par-lfpb1150086-PAR |
| X-cache
| HIT |
| X-cache-hits
| 0 |
| X-timer
| S1787176840.045504,VS0,VE32 |
| Vary
| Accept-Encoding |
| Strict-transport-security
| max-age=31557600 |
| Alt-svc
| h3=":443";ma=86400,h3-29=":443";ma=86400,h3-27=":443";ma=86400 |
| Content-length
| 1833 |
Meta Tags
| X-UA-Compatible | IE=edge |
| Viewport | width=device-width, initial-scale=1 |
Expires Mon, 17 Aug 2026 13:37:41 GMT
Cache-control public, max-age=3600
Last-modified Tue, 12 Sep 2023 15:43:51 GMT
Etag "af9523ac133f68d6a8fa6c445b4a3aba"
Content-type text/html
Content-encoding gzip
Accept-ranges bytes
Age 2278
Date Wed, 19 Aug 2026 22:00:40 GMT
Via 1.1 varnish
X-served-by cache-par-lfpb1150086-PAR
X-cache HIT
X-cache-hits 0
X-timer S1787176840.045504,VS0,VE32
Vary Accept-Encoding
Strict-transport-security max-age=31557600
Alt-svc h3=":443";ma=86400,h3-29=":443";ma=86400,h3-27=":443";ma=86400
Content-length 1833
